Total bridges
348
Public highway bridges in Mahoning County
County profile · official public datasets
Mahoning County, OH
348 public highway bridges tracked in the FHWA National Bridge Inventory: 56.6% rated Good, 38.5% Fair, 4.9% Poor.
- 348
- Public bridges
- 56.6%
- Good condition
- 4.9%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Mahoning County pairs a higher-than-median Poor-condition share among rated counties in the state with an older average build year than the state inventory.
- 47th
- of 88 on Poor share
- 4.9%
- Poor-condition share
- 348
- public highway bridges
- 1967
- avg year built
Poor is an FHWA condition category from the lowest applicable component rating (4 or below), not a live crossing-safety or closure decision. Rankings cover counties with at least five public highway bridges.
Mahoning County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Mahoning County ranks #47 of 88 Ohio counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 4.9%). Mahoning County, Ohio contains 348 public highway bridges. Roughly 56.6% are rated “Good,” 38.5% “Fair,” and 4.9% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.
Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.
Source: FHWA National Bridge Inventory. See methodology for full definitions.
Good condition
56.6%
197 of 348 rated 7-9
Fair condition
38.5%
134 of 348 rated 5-6
Poor condition
4.9%
17 of 348 rated 4 or below
In-state Poor-share rank
#47 of 88
Among Ohio counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 348 NBI-tracked bridges by lowest applicable component rating.
Good 56.6% (197)
Fair 38.5% (134)
Poor 4.9% (17)
Mahoning County's Poor-condition bridges carry 54,719 vehicle crossings a day
That is 1.8% of the county's reported daily bridge traffic on 4.9% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 3,219 crossings a day against 10,287 for a Good-condition one. A Poor rating is a condition category, not a closure or a live safety judgement; it means the lowest applicable component rating is 4 or below.
Computed over the 348 of 348 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
74.4% of Mahoning County's bridges have passed the 50-year mark
259 of the 348 bridges with a recorded construction year were built in 1974 or earlier. Age alone is not a defect: a well-maintained older bridge can rate Good, and 56.6% of this county's inventory does. Even so, this older cohort is the population from which future Poor ratings are drawn, which is why the age profile below matters alongside the condition split above.
Cutoff derives from the 2024 release year minus a 50-year design life. Source: FHWA National Bridge Inventory, 2024 release.
One structure carries 30% of the county's Poor-condition bridge traffic
WESTERN RESERVE over YELLOW CREEK, built 1939, carries 16,431 vehicles a day, the most of any Poor-rated structure here. The county's Poor-condition exposure is concentrated rather than evenly spread, so the 17-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 54,719 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Mahoning County's bridges were built
348 bridges with a recorded construction year, grouped by decade
- 1900s 7
1900–1909
7 bridges
- 1910s 5
1910–1919
5 bridges
- 1920s 13
1920–1929
13 bridges
- 1930s 15
1930–1939
15 bridges
- 1940s 19
1940–1949
19 bridges
- 1950s
1950–1959
66 bridges
- 1960s
1960–1969
87 bridges
- 1970s
1970–1979
53 bridges
- 1980s 18
1980–1989
18 bridges
- 1990s 29
1990–1999
29 bridges
- 2000s 21
2000–2009
21 bridges
- 2010s 13
2010–2019
13 bridges
- 2020s 2
2020–2029
2 bridges
What this shows Construction peaked in the 1960s, when 87 of the county's bridges still in the inventory were built, which is 25% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year is 1967, 10 years older than the Ohio average of 1977.
How Mahoning County compares with Ohio's closest counties by inventory size
The 5 Ohio counties nearest Mahoning County in number of bridges, with their condition splits. Its 4.9% Poor share is the 3rd-lowest of these 6. Its average build year of 1967 against a peer-group mean of 1975 is 8 years older.
Showing the 5 closest of 87 Ohio counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Richland County | 356 | 65.2% | 28.7% | 6.2% | 1984 |
| Ross County | 356 | 41.6% | 50.6% | 7.9% | 1964 |
| Guernsey County | 350 | 41.7% | 49.1% | 9.1% | 1975 |
| Mahoning County (this page) | 348 | 56.6% | 38.5% | 4.9% | 1967 |
| Greene County | 344 | 67.4% | 29.7% | 2.9% | 1977 |
| Clark County | 340 | 73.8% | 26.2% | 0% | 1973 |
Each share is of that county's own total tracked bridges; peers are the counties with 5 or more bridges whose inventory size is closest to Mahoning County's. Source: FHWA National Bridge Inventory, 2024 release.
Nationwide counties with similar inventory size or average build year
Two NBI-derived peer sets for Mahoning County, both outside Ohio so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside OH (348 bridges here).
- Fillmore County, MN · 348 bridges
- Cumberland County, NC · 348 bridges
- Cumberland County, PA · 348 bridges
- Pennington County, SD · 348 bridges
Similar average build year
Nearest mean year-built outside OH (1967 here).
- Los Angeles County, CA · avg 1967 · 3,547 bridges
- Allegheny County, PA · avg 1967 · 1,294 bridges
- Sonoma County, CA · avg 1967 · 609 bridges
- Merced County, CA · avg 1967 · 528 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Poor-condition bridges (17)
PARKER STREET
PoorOver: SUGAR CREEK
0.6 MI W OF LANSDOWNE BLV, Mahoning, OH
Built 1928 Load: 0.0 t ADT: 2,500
WEST AVENUE
PoorOver: CLOSED (MAHONING RIVER)
0.2 MI. N. OF MAHONING AV, Mahoning, OH
Built 1929 Load: 0.0 t ADT: 120
MIDDLETOWN RD.
PoorOver: MIDDLE FRK LTE BEAVER CR
0.3MI.W OF S.R.45, Mahoning, OH
Built 1980 Load: 13.6 t ADT: 171
WALKER MILL RD.
PoorOver: YELLOW CREEK
0.8MI.E OF SOUTH AVE, Mahoning, OH
Built 1925 Load: 16.2 t ADT: 2,227
WESTERN RESERVE
PoorOver: YELLOW CREEK
0.2MI.W OF NORTH LIMA, Mahoning, OH
Built 1939 Load: 22.7 t ADT: 16,431
FOUR MILE RUN RD.
PoorOver: FOUR MILE RUN
0.3MI.N OF RACCOON RD., Mahoning, OH
Built 1931 Load: 24.3 t ADT: 6,047
NORTH LIMA RD.
PoorOver: YELLOW CREEK
0.4MI.S OF WESTERN RSRVE, Mahoning, OH
Built 1940 Load: 24.3 t ADT: 4,223
NEW BUFFALO RD.
PoorOver: MILL CREEK
0.2MI.N OF S.R.14, Mahoning, OH
Built 1926 Load: 24.6 t ADT: 687
GOSHEN RD.
PoorOver: MDLE FORK LITTLE BEAVER
0.2MI.S OF S.R.165, Mahoning, OH
Built 1958 Load: 25.9 t ADT: 1,717
WETMORE DRIVE
PoorOver: YELLOW CREEK
0.2 MI EAST OF SR616, Mahoning, OH
Built 1939 Load: 29.2 t ADT: 1,548
LANDSDOWNE BLVD.
PoorOver: SUGAR CREEK
0.1MI.N OF EAST HIGH ST., Mahoning, OH
Built 1973 Load: 29.2 t ADT: 5,070
Gault Rd.
PoorOver: MEANDER CREEK
0.1 MI. N. of SR 224, Mahoning, OH
Built 1925 Load: 32.4 t ADT: 326
BEARD RD
PoorOver: I76 OHIO TPK
2MI WEST OF EXIT 17, Mahoning, OH
Built 1954 Load: 36.0 t ADT: 1,110
BEDELL RD.
PoorOver: MILL CREEK
0.3MI.S OF BERLIN STA, Mahoning, OH
Built 1957 Load: 41.8 t ADT: 1,880
SOUTH AVENUE
PoorOver: YOUNGSTOWN & SOUTHERN RR
1/8 MI. S. OF WILLIAMSON, Mahoning, OH
Built 1957 Load: 52.2 t ADT: 9,100
BERLIN STATION RD.
PoorOver: TURKEY BROTH CREEK
0.4MI.E OF BEDELL RD., Mahoning, OH
Built 1943 Load: 57.7 t ADT: 262
Palmyra Rd.
PoorOver: A WEST BRNH MEANDER CREE
.6 MI. E. of SR 45, Mahoning, OH
Built 1963 Load: 77.8 t ADT: 1,300
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.